Pivot Works IRS Bearing Kit. "The Original," Pivot Works' suspension rebuild kits were an industry first when they combined the first suspension components into one fast, easy, and complete kit for rebuilding your suspension. Whatever your suspension needs, Pivot Works has you covered. Sold as a kit. Kit Includes: 4 bushing(s). 4 Delrin bushing(s). 6 needle bearing shaft(s). 10 O-ring(s). 8 P-AB-001 bushing(s) - 16.5 x 31.7 x 30.2. 1 Pivot Works component(s).